Siemens EK 746 Series Provozní pokyny Strana 23

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Connecting up
SCALANCE W788-xPRO / W74x-1PRO/RR
A5E02280448-02, Release 11/2008
23
Connecting up
Connectors for external antennas and power supply
Hybrid female connector and M12 male connector
The SCALANCE W788-xPRO / W788-xRR / W74x-1xx is attached to Ethernet via a
hybrid socket on the front of the housing (position A in the figure). This port also has
contacts for the operating voltage.
CAUTION
PoE with power source equipment
Note the following if you use PoE with a PSE (Power Source Equipment):
The chassis of an additional 24 V power supply must not be grounded!
CAUTION
Strain relief for the hybrid cable
Make sure that there is strain relief for the hybrid cable socket in both directions
(along the cable axis and transverse). Forces can be exerted on the socket simply
from the weight of the hybrid cable, for example when the SCALANCE W is
installed high up.
Note
Protective cap for the hybrid socket
If you do not use the hybrid socket, this must be covered with a protective cap,
otherwise IP 65 protection is lost. A suitable protective cap is available as an
accessory (order no. 6ES7194-1JB10-0XA0). If you do not use the M12 connector,
the supplied protective cap must also be fitted to retain the IP65 degree of protection.
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